BRACKET, SWITCH B128751 - Caterpillar

Sudden movement of the machine or release of air under pressure can cause injury to persons on or near the machine. To prevent possible injury, perform the procedure that follows before testing and adjusting the air system and brakes.
Move the machine to a smooth horizontal location. Move away from operating machines and move away from personnel. Lower all implements to the ground.
Install the wheel lean locking bolt in the front axle. Install the frame lock pin. Engage the parking brake and stop the engine.
Permit only one operator on the machine. Keep all other personnel away from the machine. Also, all personnel should be visible to the operator.
Place chocks in front of the wheels and behind the wheels.
Illustration 1 g00932577
Left Side of the Machine, Rear Compartment (1) Air tank (2) Drain valve
Start the engine and allow the air system to reach the cut out pressure. Open drain valve (2) in order to release any water in the sections of the air tank. The water will lower the capacity in the air tank and water in the air tank can cause the air compressor to operate constantly. Close the drain valve when all the water has been released. Stop the engine.
Depress the service brake control pedal many times until all the air pressure has been released from the system.
Make sure that all air pressure is released before you perform any of the following procedures:
Loosen any fitting, any hose, or any component.
Tighten any fitting, any hose, or any component.
Remove any fitting, any hose, or any component.
Adjust any fitting, any hose, or any component.